The product is a spiral bound textbook on paediatric heart surgery, written in English. It focuses on the subject area of medical surgery, specifically catering to the treatment of heart conditions in children. The textbook's author is not specified, but it serves as a valuable resource for medical professionals and students studying in the field of paediatric cardiology and surgery. With in-depth information and expertise, this textbook provides a comprehensive guide to understanding and performing heart surgery on young patients.